Home / 11,987.52-16,543.08-7,272.24

Finding the Fourth Proportional to 11,987.52, 16,543.08 and 7,272.24

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Solution

The fourth proportional to 11,987.52, 16,543.08 and 7,272.24 is: 10,035.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.52 : 16,543.08 = 7,272.24 : x
  2. Step 2: Convert to fraction form
    11,987.52/16,543.08 = 7,272.24/x
  3. Step 3: Cross multiply
    11,987.52x = 16,543.08 × 7,272.24
  4. Step 4: Simplify right side
    11,987.52x = 120,305,248.10
  5. Step 5: Solve for x
    x = 120,305,248.10/11,987.52
  6. Step 6: Final answer
    x = 10,035.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.